Storage battery.



D. H. wlLsoN..

STORAGE BATTERY.v

APPLICATION FILED SEPT-23. 1913. RENEWED FEB. 3.19I7.

Patented Sept. 18, 1917.

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/Vffmlf 155 l iN VEN-IQ?? l B l Y A-r -r y DAVID H. WILSON, 0F PATEBSON,NEW JERSEY. i

Specication of Letters Patent.

STORAGE BATTERY.

Patented siepe. 1e, i917.

Application led September 23, 1913, Serial No. 791,418. Renewed February3, 1917. Serial No. 146,519.

To all whom it may concern:

Be it known that I, DAVID H. WILSON, a citizen of the United States,residing at Paterson, Bergen county, New Jersey, have invented a new anduseful Improvement in Storage Batteries, of which the following is aspecilication, reference being` made to the accompanying drawings.

The object of my invention is a better distribution of a current ofheavy amperage over the surfaces of a battery plate having lowresis'tance leading in conductors.

In the drawings:

Figure l is a plan view of my battery.

Fig. 2 is a side elevation of a plate adapted to be connected to oneterminal of a charging circuit. l

Fig. 3 is a side elevation-of the plates adapted to be connected to theother terminal of the charging circuit.

In Fig. 1 are shown two bus bars 1 and 2, having Within them copperinserts 3 and 4 to which are directly connected copper in serts 5 and 6in the battery plates respectively, as shown in Figs. 2 and 3, theinserts 5 being connected to the bus bar 1 and the inserts 6 beingconnected to the bus bar 2.

The inserts reach to the bottom of the plates, or close to the bottom asshown in the side elevations. They are so intimately joined to theplates and the plates, or those portions of-them covering the copper areso dense that 'there is no possibility of electrolytic action likely todestroy the construction. This is attained by running the cop -per stripthrough a bath of hot plastic lead subjected to hydraulic or other heavypresy sure, and causing it to issue through an aperture larger than thestrip, the lead solidifying as it issues with the copper through theaperture. The strip thus covered is attached 'to the plate along theline 7 in either plate.

The upper end of the copper insert is bared and inserted in the copperin the bus bar as indicated in broken lines at 8. The joint may besoldered or brazed, and then covered with burned lead.

The bus bars may have any suitable construction for connection with thecharging circuit.

Batteries thus constructed are capable of receiving a heavy amperage ofcurrent,-

many times the amount that the ordinary lead plate can receive withoutin]u`ry. The

location of the inserts provides paths from one plate to the other ofsubstantially equal resistance since the current passes from all partsof the plate inserts to the lead in substantially equal proportions, andsince the resistance from an insert in a plate of one polarity to aninsert in a plate of the opposite polarity laterally is equal at alllevels of the battery.

The distribution of the current equally to all portions of the platesurfaces causes equal growth over the plate surfaces by reducing andsubstantially eliminating warping strains which buckle the plates.

The plates may have their surfaces ribbed as show'n at 9 to increase theplate surface.

While I have described copper as being the material of which the insertsare composed, I would` not be understood as limiting my invention tothat material. Any low resistance material whichl unites-with lead orother plate material vwill answer.

What I claim is:

1. In a storage battery, battery plates of high resistance non-porousmaterial, low resistance inserts therein located at opposite sides ofthe plates of opposing polarity to equalize .the resistance of the pathsof the currrent between them.

2. In a battery, battery plates composed of high non-porous resistanceland low resistance portions, the low resistance portions being locatedat opposite margins of the plates of opposite polarity to equalize theresistance of the paths of current between them.

3. In a storage battery, opposite polarity bus bars carryinglow'resistance conductors, battery plates connected thereto containinglow resistance conductors along the opposite margins of the plates ofopposite polarity, said low resistance conductors in the plates beingdirectly connected to the low resistance portions of the bus bars.

Signed at New York, in the city, county and State of New York this 17thday of February, 1913.

I DAVID H. WILSON.

Witnesses: I

. MYRoN F. HILL,

A. L. TRAVIS.

